67 research outputs found

    A timer inventory based upon manual and automated analysis of ERTS-1 and supporting aircraft data using multistage probability sampling

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    A quasi-operational study demonstrating that a timber inventory based on manual and automated analysis of ERTS-1, supporting aircraft data and ground data was made using multistage sampling techniques. The inventory proved to be a timely, cost effective alternative to conventional timber inventory techniques. The timber volume on the Quincy Ranger District of the Plumas National Forest was estimated to be 2.44 billion board feet with a sampling error of 8.2 percent. Costs per acre for the inventory procedure at 1.1 cent/acre compared favorably with the costs of a conventional inventory at 25 cents/acre. A point-by-point comparison of CALSCAN-classified ERTS data with human-interpreted low altitude photo plots indicated no significant differences in the overall classification accuracies

    Hemorrhagic Transformation in Patients With Acute Ischemic Stroke and Atrial Fibrillation: Time to Initiation of Oral Anticoagulant Therapy and Outcomes.

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    Background In patients with acute ischemic stroke and atrial fibrillation, early anticoagulation prevents ischemic recurrence but with the risk of hemorrhagic transformation ( HT ). The aims of this study were to evaluate in consecutive patients with acute stroke and atrial fibrillation (1) the incidence of early HT, (2) the time to initiation of anticoagulation in patients with HT , (3) the association of HT with ischemic recurrences, and (4) the association of HT with clinical outcome at 90 days. Methods and Results HT was diagnosed by a second brain computed tomographic scan performed 24 to 72 hours after stroke onset. The incidence of ischemic recurrences as well as mortality or disability (modified Rankin Scale scores >2) were evaluated at 90 days. Ischemic recurrences were the composite of ischemic stroke, transient ischemic attack, or systemic embolism. Among the 2183 patients included in the study, 241 (11.0%) had HT . Patients with and without HT initiated anticoagulant therapy after a mean 23.3 and 11.6 days, respectively, from index stroke. At 90 days, 4.6% (95% confidence interval, 2.3-8.0) of the patients with HT had ischemic recurrences compared with 4.9% (95% confidence interval, 4.0-6.0) of those without HT ; 53.1% of patients with  HT were deceased or disabled compared with 35.8% of those without HT . On multivariable analysis, HT was associated with mortality or disability (odds ratio, 1.71; 95% confidence interval, 1.24-2.35). Conclusions In patients with HT , anticoagulation was initiated about 12 days later than patients without HT . This delay was not associated with increased detection of ischemic recurrence. HT was associated with increased mortality or disability

    Analisi auxometriche di provenienze lucane di frassino meridionale

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    In Atti VI SISEF (Società Italiana di Selvicoltura ed Ecologia Forestale

    A fragmented history: an unpublished letter to Reginald Pole in an Ambrosiana Aldine (INC. 372/1)

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    L’articolo presenta un frammento inedito di una lettera indirizzata a Reginald Pole, utilizzato come segnalibro all’interno di una copia del terzo volume dell’edizione Aldina di Aristotele, conservata presso la Biblioteca Ambrosiana: Ambr. INC. 372/1. Tramite confronto paleografico e analisi del contenuto, se ne ricostruiscono l’autore, Stephen Gardiner, che divenne in seguito vescovo di Winchester, e le circostanze di redazione, vale a dire la missione diplomatica presso papa Clemente VII dell’inverno 1529. Si analizza inoltre anche nei suoi aspetti materiali la storia del volume, entrato a far parte dell’Ambrosiana con l’acquisto della biblioteca di Cesare Rovida. Alla luce degli elementi forniti dal frammento, viene presentata la possibilità che abbia fatto parte della collezione libraria dello stesso Pole

    Tecnologie appropriate per la rimozione dei fluoruri dalle acque potabili in Senegal

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    Technical report n. 10, Università degli Studi di Brescia, Facoltà di Ingegneria, CeTAm

    [Liposarcoma of the oral cavity: description of a case and review of the literature].

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    The authors report a clinical case of acute poisoning after ingestion of nimodipine. The patient, pulseless with a reduced level of consciousness and a third degree AV block, was treated with calcium salts, high doses of dopamine and temporary cardiac pacing. Nimodipine, a nifedipine-like calcium channel blocker, is widely used in cerebrovascular diseases with a low incidence of side effect. No cases of acute poisoning are reported in the literature. The possibility of loss of selectivity at higher doses suggests a cautious use of the drug in patients with alterations of AV conductio

    A 4-Channel Optical Film Annotator for Production of Planometrically Correct Images

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    The RSRP has designed and built an optical film annotator called EGOR. This device has the ability to produce sharp images composed of dots 2 mils in size and in 64 different grey levels from jet black to full white. It can be used in either four-or two-channel modes and can produce four images of up to 6 x9 or two images of 9 x9 , respectively. EGOR also has capabilities to eliminate or induce certain kinds of distortions, for example the skew and\u27 squish associated with ERTS tapes. The spacing between dots in the Y dimension can be varied to close up or spread out the image, and the image can be tilted to give a parallelogram rather than a rectangle. To date EGOR has been used to produce planometrically rectified images of ERTS data that has been classified by CALSCAN. Three monochrome images are made with EGOR then combined using filters to produce a full color composite. EGOR has also been used in the four channel mode to produce high resolution rectified images of the four MSS bands of ERTS data tapes

    Software for Geometrical Transformation of Digital Data Used for Remote Sensing Applications

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    The Remote Sensing Research Program University of California at Berkeley has developed a regression-based XY transform methodology and supporting computer software to accurately and cost-effectively transform one- and two-dimensional digital data from one geometrical coordinate system to another. First, control points common to both the original coordinate system and the desired output system are located with respect to each system. Second. the control points and the desired equation form are input to a statistical package program which performs a least-squares regression analysis of the point; to yield transform equation coefficients. Third, the original coordinates of a one-dimensional line segment or a two-dimensional picture element (pixel) are substituted into the transform equations to yield the revised coordinates. This transformation method is computationally inexpensive, can be performed easily on small computer systems, and can be used for many types of remote sensing and ancillary data. Up to four ERTS images have been overlayed with less than one pixel error over a 1024 x 1024 pixel area. ERTS data to Universal Transverse Mercator (UTM) ground coordinate system transforms have been within 200 meter RMS error for the same size area
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